Germany's gymnast Marcel Nguyen competes on the rings during the men's qualification of the artistic gymnastics event of the London Olympic Games on July 28, 2012 at the 02 North Greenwich Arena in London. AFP PHOTO / THOMAS COEX

Germany's gymnast Marcel Nguyen competes on the rings during the men's qualification of the artistic gymnastics event of the London Olympic Games on July 28, 2012 at the 02 North Greenwich Arena in London. AFP PHOTO / THOMAS COEX